ei-mata dasa-dina bhojana-kirtana
eka-rupe kari' kare prabhura sevana
ei-mata—in this way; dasa-dina—continuously for ten days; bhojana-kirtana—eating and chanting; eka-rupe—without change; kari'-doing; kare—does; prabhura—of the Lord; sevana—service.
For ten continuous days Advaita Acarya held feasting and chanting in the evening. He served the Lord in this way without any change.
Link to this page: https://prabhupadabooks.com/cc/madhya/3/136